<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script src="./jquery-1.8.3.min.js"></script>

</head>
<body>
	<h1>js和jquery</h1>
	<script>
		$(document).ready(function(){
			var box1 = $('#box');
			var box = document.getElementById('box');
			$(box).css('background-color','#369');
			$box[0].style.backgroundColor = '#f00';
		})
	</script>
	<h1>jQuery dom对象和js DOM对象的区别</h1>
	<div id="box"></div>
</body>
</html>